lpfc_mem.c revision 92d7f7b0cde3ad2260e7462b40867b57efd49851
1/******************************************************************* 2 * This file is part of the Emulex Linux Device Driver for * 3 * Fibre Channel Host Bus Adapters. * 4 * Copyright (C) 2004-2006 Emulex. All rights reserved. * 5 * EMULEX and SLI are trademarks of Emulex. * 6 * www.emulex.com * 7 * Portions Copyright (C) 2004-2005 Christoph Hellwig * 8 * * 9 * This program is free software; you can redistribute it and/or * 10 * modify it under the terms of version 2 of the GNU General * 11 * Public License as published by the Free Software Foundation. * 12 * This program is distributed in the hope that it will be useful. * 13 * ALL EXPRESS OR IMPLIED CONDITIONS, REPRESENTATIONS AND * 14 * WARRANTIES, INCLUDING ANY IMPLIED WARRANTY OF MERCHANTABILITY, * 15 * FITNESS FOR A PARTICULAR PURPOSE, OR NON-INFRINGEMENT, ARE * 16 * DISCLAIMED, EXCEPT TO THE EXTENT THAT SUCH DISCLAIMERS ARE HELD * 17 * TO BE LEGALLY INVALID. See the GNU General Public License for * 18 * more details, a copy of which can be found in the file COPYING * 19 * included with this package. * 20 *******************************************************************/ 21 22#include <linux/mempool.h> 23#include <linux/pci.h> 24#include <linux/interrupt.h> 25 26#include <scsi/scsi_device.h> 27#include <scsi/scsi_transport_fc.h> 28 29#include <scsi/scsi.h> 30 31#include "lpfc_hw.h" 32#include "lpfc_sli.h" 33#include "lpfc_disc.h" 34#include "lpfc_scsi.h" 35#include "lpfc.h" 36#include "lpfc_crtn.h" 37 38#define LPFC_MBUF_POOL_SIZE 64 /* max elements in MBUF safety pool */ 39#define LPFC_MEM_POOL_SIZE 64 /* max elem in non-DMA safety pool */ 40 41 42 43int 44lpfc_mem_alloc(struct lpfc_hba * phba) 45{ 46 struct lpfc_dma_pool *pool = &phba->lpfc_mbuf_safety_pool; 47 int longs; 48 int i; 49 50 phba->lpfc_scsi_dma_buf_pool = pci_pool_create("lpfc_scsi_dma_buf_pool", 51 phba->pcidev, phba->cfg_sg_dma_buf_size, 8, 0); 52 if (!phba->lpfc_scsi_dma_buf_pool) 53 goto fail; 54 55 phba->lpfc_mbuf_pool = pci_pool_create("lpfc_mbuf_pool", phba->pcidev, 56 LPFC_BPL_SIZE, 8,0); 57 if (!phba->lpfc_mbuf_pool) 58 goto fail_free_dma_buf_pool; 59 60 pool->elements = kmalloc(sizeof(struct lpfc_dmabuf) * 61 LPFC_MBUF_POOL_SIZE, GFP_KERNEL); 62 if (!pool->elements) 63 goto fail_free_lpfc_mbuf_pool; 64 65 pool->max_count = 0; 66 pool->current_count = 0; 67 for ( i = 0; i < LPFC_MBUF_POOL_SIZE; i++) { 68 pool->elements[i].virt = pci_pool_alloc(phba->lpfc_mbuf_pool, 69 GFP_KERNEL, &pool->elements[i].phys); 70 if (!pool->elements[i].virt) 71 goto fail_free_mbuf_pool; 72 pool->max_count++; 73 pool->current_count++; 74 } 75 76 phba->mbox_mem_pool = mempool_create_kmalloc_pool(LPFC_MEM_POOL_SIZE, 77 sizeof(LPFC_MBOXQ_t)); 78 if (!phba->mbox_mem_pool) 79 goto fail_free_mbuf_pool; 80 81 phba->nlp_mem_pool = mempool_create_kmalloc_pool(LPFC_MEM_POOL_SIZE, 82 sizeof(struct lpfc_nodelist)); 83 if (!phba->nlp_mem_pool) 84 goto fail_free_mbox_pool; 85 86 phba->lpfc_hbq_pool = pci_pool_create("lpfc_hbq_pool",phba->pcidev, 87 LPFC_BPL_SIZE, 8, 0); 88 if (!phba->lpfc_hbq_pool) 89 goto fail_free_nlp_mem_pool; 90 91 longs = (phba->max_vpi + BITS_PER_LONG - 1) / BITS_PER_LONG; 92 phba->vpi_bmask = kzalloc(longs * sizeof(unsigned long), GFP_KERNEL); 93 if (!phba->vpi_bmask) 94 goto fail_free_hbq_pool; 95 96 return 0; 97 98 fail_free_hbq_pool: 99 lpfc_sli_hbqbuf_free_all(phba); 100 fail_free_nlp_mem_pool: 101 mempool_destroy(phba->nlp_mem_pool); 102 phba->nlp_mem_pool = NULL; 103 fail_free_mbox_pool: 104 mempool_destroy(phba->mbox_mem_pool); 105 phba->mbox_mem_pool = NULL; 106 fail_free_mbuf_pool: 107 while (i--) 108 pci_pool_free(phba->lpfc_mbuf_pool, pool->elements[i].virt, 109 pool->elements[i].phys); 110 kfree(pool->elements); 111 fail_free_lpfc_mbuf_pool: 112 pci_pool_destroy(phba->lpfc_mbuf_pool); 113 phba->lpfc_mbuf_pool = NULL; 114 fail_free_dma_buf_pool: 115 pci_pool_destroy(phba->lpfc_scsi_dma_buf_pool); 116 phba->lpfc_scsi_dma_buf_pool = NULL; 117 fail: 118 return -ENOMEM; 119} 120 121void 122lpfc_mem_free(struct lpfc_hba * phba) 123{ 124 struct lpfc_sli *psli = &phba->sli; 125 struct lpfc_dma_pool *pool = &phba->lpfc_mbuf_safety_pool; 126 LPFC_MBOXQ_t *mbox, *next_mbox; 127 struct lpfc_dmabuf *mp; 128 int i; 129 130 kfree(phba->vpi_bmask); 131 lpfc_sli_hbqbuf_free_all(phba); 132 133 list_for_each_entry_safe(mbox, next_mbox, &psli->mboxq, list) { 134 mp = (struct lpfc_dmabuf *) (mbox->context1); 135 if (mp) { 136 lpfc_mbuf_free(phba, mp->virt, mp->phys); 137 kfree(mp); 138 } 139 list_del(&mbox->list); 140 mempool_free(mbox, phba->mbox_mem_pool); 141 } 142 list_for_each_entry_safe(mbox, next_mbox, &psli->mboxq_cmpl, list) { 143 mp = (struct lpfc_dmabuf *) (mbox->context1); 144 if (mp) { 145 lpfc_mbuf_free(phba, mp->virt, mp->phys); 146 kfree(mp); 147 } 148 list_del(&mbox->list); 149 mempool_free(mbox, phba->mbox_mem_pool); 150 } 151 152 psli->sli_flag &= ~LPFC_SLI_MBOX_ACTIVE; 153 if (psli->mbox_active) { 154 mbox = psli->mbox_active; 155 mp = (struct lpfc_dmabuf *) (mbox->context1); 156 if (mp) { 157 lpfc_mbuf_free(phba, mp->virt, mp->phys); 158 kfree(mp); 159 } 160 mempool_free(mbox, phba->mbox_mem_pool); 161 psli->mbox_active = NULL; 162 } 163 164 for (i = 0; i < pool->current_count; i++) 165 pci_pool_free(phba->lpfc_mbuf_pool, pool->elements[i].virt, 166 pool->elements[i].phys); 167 kfree(pool->elements); 168 169 pci_pool_destroy(phba->lpfc_hbq_pool); 170 mempool_destroy(phba->nlp_mem_pool); 171 mempool_destroy(phba->mbox_mem_pool); 172 173 pci_pool_destroy(phba->lpfc_scsi_dma_buf_pool); 174 pci_pool_destroy(phba->lpfc_mbuf_pool); 175 176 phba->lpfc_hbq_pool = NULL; 177 phba->nlp_mem_pool = NULL; 178 phba->mbox_mem_pool = NULL; 179 phba->lpfc_scsi_dma_buf_pool = NULL; 180 phba->lpfc_mbuf_pool = NULL; 181 182 /* Free the iocb lookup array */ 183 kfree(psli->iocbq_lookup); 184 psli->iocbq_lookup = NULL; 185 186} 187 188void * 189lpfc_mbuf_alloc(struct lpfc_hba *phba, int mem_flags, dma_addr_t *handle) 190{ 191 struct lpfc_dma_pool *pool = &phba->lpfc_mbuf_safety_pool; 192 unsigned long iflags; 193 void *ret; 194 195 ret = pci_pool_alloc(phba->lpfc_mbuf_pool, GFP_KERNEL, handle); 196 197 spin_lock_irqsave(&phba->hbalock, iflags); 198 if (!ret && (mem_flags & MEM_PRI) && pool->current_count) { 199 pool->current_count--; 200 ret = pool->elements[pool->current_count].virt; 201 *handle = pool->elements[pool->current_count].phys; 202 } 203 spin_unlock_irqrestore(&phba->hbalock, iflags); 204 return ret; 205} 206 207void 208__lpfc_mbuf_free(struct lpfc_hba * phba, void *virt, dma_addr_t dma) 209{ 210 struct lpfc_dma_pool *pool = &phba->lpfc_mbuf_safety_pool; 211 212 if (pool->current_count < pool->max_count) { 213 pool->elements[pool->current_count].virt = virt; 214 pool->elements[pool->current_count].phys = dma; 215 pool->current_count++; 216 } else { 217 pci_pool_free(phba->lpfc_mbuf_pool, virt, dma); 218 } 219 return; 220} 221 222void 223lpfc_mbuf_free(struct lpfc_hba * phba, void *virt, dma_addr_t dma) 224{ 225 unsigned long iflags; 226 227 spin_lock_irqsave(&phba->hbalock, iflags); 228 __lpfc_mbuf_free(phba, virt, dma); 229 spin_unlock_irqrestore(&phba->hbalock, iflags); 230 return; 231} 232 233void * 234lpfc_hbq_alloc(struct lpfc_hba *phba, int mem_flags, dma_addr_t *handle) 235{ 236 void *ret; 237 ret = pci_pool_alloc(phba->lpfc_hbq_pool, GFP_ATOMIC, handle); 238 return ret; 239} 240 241void 242lpfc_hbq_free(struct lpfc_hba *phba, void *virt, dma_addr_t dma) 243{ 244 pci_pool_free(phba->lpfc_hbq_pool, virt, dma); 245 return; 246} 247 248void 249lpfc_in_buf_free(struct lpfc_hba *phba, struct lpfc_dmabuf *mp) 250{ 251 struct hbq_dmabuf *hbq_entry; 252 253 if (phba->sli3_options & LPFC_SLI3_HBQ_ENABLED) { 254 hbq_entry = container_of(mp, struct hbq_dmabuf, dbuf); 255 if (hbq_entry->tag == -1) { 256 lpfc_hbq_free(phba, hbq_entry->dbuf.virt, 257 hbq_entry->dbuf.phys); 258 kfree(hbq_entry); 259 } else { 260 lpfc_sli_free_hbq(phba, hbq_entry); 261 } 262 } else { 263 lpfc_mbuf_free(phba, mp->virt, mp->phys); 264 kfree(mp); 265 } 266 return; 267} 268 269